<template>
  <div class="star" :class="'star-' + size">
    <span
      v-for="(starClass, index) in starClasses"
      :key="index"
      class="star-item"
      :class="starClass"
    ></span>
  </div>
</template>

<script>
let classOn = 'on'
let classHalf = 'half'
let classOff = 'off'

export default {
  name: 'Star',
  props: {
    score: Number,
    size: Number
  },
  data () {
    return {

    }
  },
  computed: {
    starClasses () {
      let newArr = []
      const newScore = Math.floor(this.score)
      for (let i = 0; i < newScore; i++) {
        newArr.push(classOn)
      }
      if (newScore * 10 - this.score * 10 >= 0.5) {
        newArr.push(classHalf)
      }
      if (newArr.length < 5) {
        newArr.push(classOff)
      }
      return newArr
    }
  },
  methods: {

  }
}
</script>

<style lang="stylus" scoped>
@import '../../assets/common/stylus/mixins.styl'
.star /* 2x图 3x图 */
  display inline-block
  font-size 0
  .star-item
    display inline-block
    background-repeat no-repeat
  &.star-48
    .star-item
      width 20px
      height 20px
      margin-right 22px
      background-size 20px 20px
      &:last-child
        margin-right 0
      &.on
        bg-image('./images/star48_on')
      &.half
        bg-image('./images/star48_half')
      &.off
        bg-image('./images/star48_off')
  &.star-36
    .star-item
      width 15px
      height 15px
      margin-right 6px
      background-size 15px 15px
      &:last-child
        margin-right 0
      &.on
        bg-image('./images/star36_on')
      &.half
        bg-image('./images/star36_half')
      &.off
        bg-image('./images/star36_off')
  &.star-24
    .star-item
      width 10px
      height 10px
      margin-right 3px
      background-size 10px 10px
      &:last-child
        margin-right 0
      &.on
        bg-image('./images/star24_on')
      &.half
        bg-image('./images/star24_half')
      &.off
        bg-image('./images/star24_off')
</style>
